Driving mechanism with alternately-acting levers.



No.-841,021. PATENTBD JAN. 8, 1907.

P. KLEINVDGEL. DRIVING MECHANISM WITH ALTERNATELY AGTING LBVERS.

APP'LIOATIOII FILED AUG. 24, 1906.

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UNITED srArEs PATENT OFFICE.

FRIEDRICH KLEINVOGEL,

OF NEWPORT, KENTUCKY.

Specification of Letters Patent.

Patented Jan. 8, 1907.

Application fil d August 24, 1906- Serial No. 331,931.

To all whom it may concern:

Be it known that I, FRIEDRICH KLEIN- VOGEL, of the city of Newport, State of Kentucky, have invented certain new and use ful Improvements in Driving Mechanism with Alternately-Acting Levers, of which the following is a full, clear, and exact specification.

The present invention is a modification of the driving mechanism with alternately-acting levers forming the subject-matter of my former patent, No. 830,153. In said patent the principal element of the system of levers is a triangular connection. nstead of the same I can use a connection of a modified form which offers the advantage that the construction is simplified and that the point of ivotal suspension of the connections is p aced approximately over the line of pull of the link, which is pivoted to the treadle-lever. This manner of suspending the connection results in a saving of power, as the horizontal stress which results in the triangular connection is now eliminated and the line of stress between said link and the pivot of suspension of the connections remains nearly vertical.

In the accompanying drawings the improvement is illustrated in a side elevation in Fig. 1, and in a plan view in Fig. 2;

The disposition of the pivotal points of the links if, u, r, and p at their points of connection with the connections 12 causes the links 1' at all times during a complete stroke to maintain a nearly-vertical position, thus saving the loss of power that would result from a less favorable disposition of the parts.

The crank-levers in the present modification are bifurcated at their'front ends, as thus leaving an opening through which the foot of the operator may descend when the treadle is in its lowest position, and by this construction a lower seat may be used.

Having thus described my invention, what I claim is 1. The combination with a frame, of a shaft carried by the frame and having at its ends crank-arms provided with rollers, levers pivoted to the frame and engaging the rollers of the crank-arms, treadle-levers, connections interposed between the treadlelevers and. the crank-engaging levers, bars pivoted to the frame and pivotally suspending the interposed connections, links pivoted to the crank-engaging levers and pivotally connected to the interposed connections below their suspension-points and links pivoted to the treadle-levers and also pivoted to the interposed connections below their suspension-points.

2. The combination with a frame, of an actuated lever pivoted thereto, an operatinglever pivoted to the frame, a connection interposed between the operating-lever and the actuated lever, and adapted to transmit power therebetween, a bar hinged to the frame and pivotally suspending the interposed connection, two linkspivoted to the actuated lever and pivotally connected to one side of the interposed connection at independent points below the suspension-point of the connection, and a link pivoted to the operating-lever and also pivoted to the interposed connection at a point below its point of suspension, and at that side of the interposed connection opposite to the ivotal points of the links from the actuated ever.

In testimony whereof I affix my signature.

FRIEDRICH KLEINVOGEL.

In presence of- GEORGE DIXON, HOWARD M. BENTON. 

